<template>
     <div class="tab-bar-item" @click="itemClick">
       <!-- 所有的item都展示同一个图片，同一个文字 -->
        <div v-if="!isActive">
          <slot name="item-icon"></slot>  
        </div>
        <div v-else>
          <slot name="item-icon-active"></slot>
        </div>    
        <div :style="activeStyle">
          <slot name="item-text"></slot>
        </div> 
      </div>
</template>

<script>

export default({
    name:'TabbarItem',
    props:{
      path:String,
      activeColor:{
        type:String,
        default:'red'
      }
    },
    data(){
      return {
        /* isActive:true, */
      }
    },
    computed:{
      isActive(){
        return this.$route.path.indexOf(this.path) !== -1
      },
      activeStyle(){
        return this.isActive ? {color: this.activeColor} : {}
      }
    },
    methods:{
      itemClick(){
      /*   console.log(this.$router)
        console.log(this.$route)
        console.log(this.path) */
        this.$router.replace(this.path)
      }
    } 
})

</script>

<style scoped>
 .tab-bar-item{
    flex: 1;
    text-align: center;
    height: 49px;   /* tab-bar 底部导航的高度一般都是49px */
    font-size: 14px;
  }

 /*  .active{
    color: red;
  } */
</style>
